When I start SplitCam 7.7.4.1 the console displays VERY small (in a high resolution) which makes it nearly impossible to see. I can find no setting that controls the resolution/size of the app itself. Aside from this, all functionality seems to be working properly. It's just that it's very difficult to make any changes to the source, options, etc. I haven't seen this behavior in any previous SplitCam version, and have run out of other things I can think of to try.

I am not agree with your notes. I've understood you are mean the main window of Splitcam. That window has always a constant size - 512x384.
We use it, as a control window. Splitcam is a splitter, its task is send video streams to other apps .
I also don't see any problems with the Splitcam control. All control elements are placed on the forward panel of Splitcam.

Yes, it's the main window of SplitCam that I'm referring to. Here's a screen shot to show you what I mean... Note how tiny the text in the "Options" menu is compared to the text size of the "Click here..." ad text. It's a resolution problem, but I don't know what control/setting determines the text of the main window.

Splitcamera window is definitely too small for the 4K monitor I am using, and I have bigger 32" monitor, people with 28" 4K could not use it. Pictures are small and details are not easily visible but most problematic is pointing mouse on the edge of PIP window in order to zoom it. It is hard to target the border. For 4K monitors the window should be just twice bigger and I think implementing such option would not be much time consuming?

Thank you, that will make life easier when it is released , BTW, I found related minor funny issue. When being in pip mode with two video inputs I expanded pip video to full screen and then reduced it maximally in vertical direction so it became like a single line and disappeared. After that I could not expand back the pip window from this single line anymore, either my mouse with 4K monitor can not activate or it is impossible. Making the pip window disappearing in this way is useful since it may act like a curtain but it should be possible to raise the curtain up and down as well.